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9/27/01 conductora wire or other material suitable for conducting electricity. conduita rigid metallic or nonmetallic casing, or a flexible metallic casing covered with a woven braid or synthetic rubber used to encase electrical cables. contactelectrical connectors in a switch, sole noid or relay that controls the flow of current. control panelan upright panel, open or closed, where switches, rheostats, meters, etc., are in stalled for the control and protection of electrical machinery. corrosion—the electrochemical deterioration of a metal resulting from chemical reaction to the sur rounding environment. crack—is a partial separation of material caused by vibration, overloading, internal stresses, nicks, defective assemblies, fatigue, or rapid changes in temperature. creepage—is the conducting of electrical current along a surface between two points at different po tentials. The current’s ability to pass between two points increases with higher voltage and when de posits of moisture or other conductive materials ex ist on the surfaces. cross grain—grain not parallel with the axis of a piece. It may be either diagonal or spiral grain or a combination of the two. cross coat—a double coat of dope or paint. It is sprayed on in one direction, and then immediately after the solvent flash-off, it is sprayed at right an gles to the first coat. cureto change the properties of a thermosetting resin irreversibly by vulcanization or chemical reac tion. May be accomplished by the addition of curing (cross-linking) agents, with or without a catalyst, and with or without heat or pressure. curing temperaturetemperature to which a resin or an assembly is subjected in order to cure the resin. cutting torch—a device used in gas cutting of metals. dampinglimiting the duration of vibration by ei ther electrical or mechanical means. AC 43.13-1B CHG 1 Appendix 1 datainformation that supports and/or describes the original aircraft design, alteration or repair includ ing the following: (1) drawings, sketches, and or pho tographs; (2) engineering analysis; (3) engineering orders; and (4) operating limitations. datumimaginary vertical plane from which all hori zontal measurements are made or indicated when the aircraft is in level flight attitude. derating—is a technique whereby a part is stressed in actual usage at values well below the manufacturer’s rating for the part. By decreasing mechanical, thermal, and electrical stresses, the probability of degradation or catastrophic failure is lessened. direct current electrode negative—the arrange ment of direct current arc welding leads in which the work is the positive pole and the electrode is the negative pole of the welding arc. direct current electrode positive—the arrange ment of direct current arc welding leads in which the work is the negative pole and the electrode is the positive pole of the welding arc. discontinuity—an interruption in the normal physi cal structure or configuration of a part, such as a crack, lap, seam, inclusion, or porosity. distal tip—the tip, lens end, of a borescope. dope—liquid applied to fabric to tauten it by shrink ing, strengthen it, and render it airtight by acting as a filler. Dope-proofing—protecting a surface from the chemicals and chafing qualities of dope and doped fabrics. drape—the ability of tape and broad goods to con form to a contoured shape. drip loopa bundle installation method used to prevent water or other fluid contaminants from run ning down the wiring into a connector. dry rot—a term loosely applied to many types of wood decay but especially to that which, when in an advanced stage, permits the wood to be easily crushed to a dry powder. The term is actually a misnomer for any decay, since all fungi require considerable moisture for growth. 3PDF Image | AFS-640
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